Effect of Cation Substitution on Critical Fields in the n-type Zn_{x}Sn_{y}Cr_{z}Se_{4} Spinel Semiconductors

• Authors: T. Groń , I. Jendrzejewska , E. Maciążek , A. Pacyna , H. Duda , P. Zajdel , J. Krok-Kowalski
• Languages of publication: EN

Abstracts

EN

The ac dynamic magnetic susceptibility was used to study a cation substitution on critical fields in polycrystalline (Zn_{0.87}Sn_{0.048})Cr_{2.02}Se_{4} and Zn_{0.93}[Cr_{1.95}Sn_{0.05}]Se_{4} spinels with tetra- and octahedral coordination of Sn ions, respectively. An increasing static magnetic field shifts the Néel temperature T_{N} to lower temperatures while a susceptibility peak at T_{m} in the paramagnetic region - to higher temperatures. Below T_{N} the magnetic field dependence of susceptibility, χ_{ac}(H), shows two peaks at critical fields H_{c1} and H_{c2}. The values of H_{c1} decrease slightly with temperature while the values of H_{c2} decrease strongly with temperature, especially for spinel with octahedral coordination of Sn ions, suggesting a weakness of the ferromagnetic component.

Keywords

EN

75.50.Pp; 75.30.Kz; 75.30.Et

Discipline

• 75.30.Et: Exchange and superexchange interactions(see also 71.70.Gm Exchange interactions)
• 75.50.Pp: Magnetic semiconductors
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 116
• Issue: 5
• Pages: 971-974

Dates

published

2009-11

Contributors

author

T. Groń

• Institute of Physics, University of Silesia, Uniwersytecka 40-007 Katowice, Poland

author

I. Jendrzejewska

• Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland

author

E. Maciążek

• Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland

author

A. Pacyna

• The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, E. Radzikowskiego 152, 31-342 Kraków, Poland

author

H. Duda

• Institute of Physics, University of Silesia, Uniwersytecka 40-007 Katowice, Poland

author

P. Zajdel

• Institute of Physics, University of Silesia, Uniwersytecka 40-007 Katowice, Poland

author

J. Krok-Kowalski

• Institute of Physics, University of Silesia, Uniwersytecka 40-007 Katowice, Poland

References

• 1. I. Jendrzejewska, J. Mroziński, T. Groń, H. Duda, P. Zajdel, A.W. Pacyna, E. Maciążek, A. Hanc, J. Alloys Comp. 480, 63 (2009)
• 2. F.K. Lotgering, in: Proc. Int. Conf. on Magnetism, Nottingham, Institute of Physics, London 1965, p. 533
• 3. R. Plumier, J. Phys. (France) 27, 213 (1966)
• 4. T. Groń, E. Malicka, H. Duda, A.W. Pacyna, T. Mydlarz, R. Sitko, M. Pawełczyk, J. Phys. Chem. Solids 70, 1175 (2009)
• 5. T. Groń, E. Malicka, A.W. Pacyna, Physica B 404, 3554 (2009)

Identifiers

DOI

10.12693/APhysPolA.116.971